Finding the Fourth Proportional to 2,636.14, 3,951.20 and 880.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.14 : 3,951.20 = 880.73 : x
2. Step 2: Convert to fraction form
   2,636.14/3,951.20 = 880.73/x
3. Step 3: Cross multiply
   2,636.14x = 3,951.20 × 880.73
4. Step 4: Simplify right side
   2,636.14x = 3,479,922.82
5. Step 5: Solve for x
   x = 3,479,922.82/2,636.14
6. Step 6: Final answer
   x = 1,320.08